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Posted to dev@synapse.apache.org by "Hiranya Jayathilaka (JIRA)" <ji...@apache.org> on 2016/05/27 00:18:12 UTC
[jira] [Resolved] (SYNAPSE-991) GC issue. StatisticsCollector has
not been invoked by callback.
[ https://issues.apache.org/jira/browse/SYNAPSE-991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hiranya Jayathilaka resolved SYNAPSE-991.
-----------------------------------------
Resolution: Not A Problem
It seems the reporter is satisfied with the explanation provided. Please reopen if this is still an issue.
> GC issue. StatisticsCollector has not been invoked by callback.
> ---------------------------------------------------------------
>
> Key: SYNAPSE-991
> URL: https://issues.apache.org/jira/browse/SYNAPSE-991
> Project: Synapse
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.1
> Environment: Production environment.
> wrapper.java.initmemory=2048
> wrapper.java.maxmemory=2048
> wrapper.java.additional.12=-XX:NewSize=1024m
> wrapper.java.additional.13=-XX:MaxNewSize=1024m
> wrapper.java.additional.14=-XX:PermSize=256m
> wrapper.java.additional.15=-XX:MaxPermSize=256m
> wrapper.java.additional.16=-XX:SurvivorRatio=65536
> wrapper.java.additional.17=-XX:TargetSurvivorRatio=0
> wrapper.java.additional.18=-XX:MaxTenuringThreshold=0
> wrapper.java.additional.19=-XX:+UseParNewGC
> wrapper.java.additional.20=-XX:ParallelGCThreads=12
> wrapper.java.additional.21=-XX:+UseConcMarkSweepGC
> wrapper.java.additional.22=-XX:+CMSParallelRemarkEnabled
> wrapper.java.additional.23=-XX:+CMSCompactWhenClearAllSoftRefs
> wrapper.java.additional.24=-XX:+UseCMSInitiatingOccupancyOnly
> wrapper.java.additional.25=-XX:CMSInitiatingOccupancyFraction=85
> Reporter: Arockia Raphael
> Assignee: Hiranya Jayathilaka
> Priority: Minor
>
> Production server was up with all synapse services for the past 2 months. GC could not be able to reclaim the memory in Old Gen which of size close to 1 GB. Based on our heap dump analysis, StatisticsCollector was holding the memory and manually invoked StatisticsViewMBean.clearAllStatistics() method to get rid of the issue.
> When we analysed the code, we found out the StatisticsCollector has never been called when the server in Started State. Periodic callbacks are scheduled but not triggering StatisticsCleaner which cleans up StatisticsCollector references.
> SynapseConfigUtils.getStatisticsCollector(ServerContextInformation contextInfo) {
> if (contextInfo != null && contextInfo.getServerState() == ServerState.INITIALIZED) {
> Please let us know any patch or fix for this issue.
> Thanks,
> Arockia
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